My 2001 ford f150 lightning was running perfectly, i didn't use it for 2 weeks, when I tried to start it ,it fired up firs time ( like always ) but won't stay running . Any help would be great.

10

Asked by Apr 09, 2015 at 05:12 PM about the 2001 Ford F-150 SVT Lightning 2 Dr Supercharged Standard Cab Stepside SB

Question type: Maintenance & Repair

5 Answers

2 weeks is not long enough for the gas to go bad, but if it was near empty it may have gotten water from condensation in the tank. You'd be surprised how much water can collect, (depending on humidity where you live and temperature differences from day to night) even with the sealed EVAP system clean air must enter the tank as fuel is used, the EVAP prevents fumes from escaping not entering. Try some Sea-Foam, or HEET, although I am not a fan of mechanic-in-a-can stuff, those products help remove water by mixing alcohol with the water and it burns through. Be sure to read label and not get oil treatment. Now...if it was full or near full, maybe a rodent got in intake and built a nest? Happens all the time. Check air filter and intake duct before blower.

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79,195

Also check for a dirty IAC (Idle Air Control) valve. Might be gummed up enough from normal use to cause it to get stuck from the 2 weeks of inactivity. HTH. -Jim

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10

Thanks very much for your answers , as i live in the U.K. it's quite hard to find a reliable machanic that has worked on American vehicles, so i will try both of your answers. Thanks for taking the time out to answer my question. Russ.

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You're welcome, Russ. Glad to help. -Jim

15

I have the same problem with my 03'SVT Lightning. It starts up perfectly, then stalls. I have changed the fuelpumps (walbro) the iac , sparkplugs, fuelfilter and fuel relay.. but still wont run:( Any suggestions?

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